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https://www.readbyqxmd.com/read/28210505/nanotechnology-based-approach-in-tuberculosis-treatment
#1
REVIEW
Mohammad Nasiruddin, Md Kausar Neyaz, Shilpi Das
Tuberculosis, commonly known as TB, is the second most fatal infectious disease after AIDS, caused by bacterium called Mycobacterium tuberculosis. Prolonged treatment, high pill burden, low compliance, and stiff administration schedules are factors that are responsible for emergence of MDR and XDR cases of tuberculosis. Till date, only BCG vaccine is available which is ineffective against adult pulmonary TB, which is the most common form of disease. Various unique antibodies have been developed to overcome drug resistance, reduce the treatment regimen, and elevate the compliance to treatment...
2017: Tuberculosis Research and Treatment
https://www.readbyqxmd.com/read/28194704/challenges-and-future-prospects-for-the-delivery-of-biologics-oral-mucosal-pulmonary-and-transdermal-routes
#2
Javier O Morales, Kristin R Fathe, Ashlee Brunaugh, Silvia Ferrati, Song Li, Miguel Montenegro-Nicolini, Zeynab Mousavikhamene, Jason T McConville, Mark R Prausnitz, Hugh D C Smyth
Biologic products are large molecules such as proteins, peptides, nucleic acids, etc., which have already produced many new drugs for clinical use in the last decades. Due to the inherent challenges faced by biologics after oral administration (e.g., acidic stomach pH, digestive enzymes, and limited permeation through the gastrointestinal tract), several alternative routes of administration have been investigated to enable sufficient drug absorption into systemic circulation. This review describes the buccal, sublingual, pulmonary, and transdermal routes of administration for biologics with relevant details of the respective barriers...
February 13, 2017: AAPS Journal
https://www.readbyqxmd.com/read/28182569/chronic-obstructive-pulmonary-disease-exacerbation-and-inhaler-device-handling-real-life-assessment-of-2935-patients
#3
Mathieu Molimard, Chantal Raherison, Severine Lignot, Aurelie Balestra, Stephanie Lamarque, Anais Chartier, Cecile Droz-Perroteau, Regis Lassalle, Nicholas Moore, Pierre-Olivier Girodet
Acute exacerbations of chronic obstructive pulmonary disease (COPD) can be prevented by inhaled treatment. Errors in inhaler handling, not taken into account in clinical trials, could impact drug delivery and minimise treatment benefit. We aimed to assess real-life inhaler device handling in COPD patients and its association with COPD exacerbations.To this end, 212 general practitioners and 50 pulmonologists assessed the handling of 3393 devices used for continuous treatment of COPD in 2935 patients. Handling errors were observed in over 50% of handlings, regardless of the device used...
February 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28176769/heterogeneity-of-macrophage-infiltration-and-therapeutic-response-in-lung-carcinoma-revealed-by-3d-organ-imaging
#4
Michael F Cuccarese, J Matthew Dubach, Christina Pfirschke, Camilla Engblom, Christopher Garris, Miles A Miller, Mikael J Pittet, Ralph Weissleder
Involvement of the immune system in tumour progression is at the forefront of cancer research. Analysis of the tumour immune microenvironment has yielded a wealth of information on tumour biology, and alterations in some immune subtypes, such as tumour-associated macrophages (TAM), can be strong prognostic indicators. Here, we use optical tissue clearing and a TAM-targeting injectable fluorescent nanoparticle (NP) to examine three-dimensional TAM composition, tumour-to-tumour heterogeneity, response to colony-stimulating factor 1 receptor (CSF-1R) blockade and nanoparticle-based drug delivery in murine pulmonary carcinoma...
February 8, 2017: Nature Communications
https://www.readbyqxmd.com/read/28170282/pharmacokinetics-of-salbutamol-delivered-from-the-unit-dose-dry-powder-inhaler-comparison-with-the-metered-dose-inhaler-and-diskus-dry-powder-inhaler
#5
Alison Moore, Kylie Riddell, Shashidhar Joshi, Robert Chan, Rashmi Mehta
AIM: To compare the systemic exposure of salbutamol following delivery from the unit dose dry powder inhaler (UD-DPI) system with that from the Diskus(®) and metered dose inhaler (MDI). MATERIALS AND METHODS: This open-label, two-part, six-way crossover, randomized single-dose study in healthy subjects evaluated salbutamol systemic exposure of three dose strengths (using three inhalations: 3 × 150 μg [450 μg], 3 × 200 μg [600 μg], and 3 × 250 μg [750 μg]) and 2% of drug in lactose blends (1...
February 7, 2017: Journal of Aerosol Medicine and Pulmonary Drug Delivery
https://www.readbyqxmd.com/read/28165814/targeting-delivery-of-simvastatin-using-icam-1-antibody-conjugated-nanostructured-lipid-carriers-for-acute-lung-injury-therapy
#6
Shu-Juan Li, Xiao-Juan Wang, Jing-Bo Hu, Xu-Qi Kang, Li Chen, Xiao-Ling Xu, Xiao-Ying Ying, Sai-Ping Jiang, Yong-Zhong Du
Acute lung injury (ALI) is a critical illness without effective therapeutic modalities currently. Recent studies indicated potential efficacy of statins for ALI, while high-dose statins was suggested to be significant for attenuating inflammation in vivo. Therefore, a lung-targeted drug delivery system (DDS) delivering simvastatin (SV) for ALI therapy was developed, attempting to improve the disease with a decreased dose and minimize potential adverse effects. SV-loaded nanostructured lipid carriers (SV/NLCs) with different size were prepared primarily...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28161667/aerodynamic-properties-and-in-silico-deposition-of-meloxicam-potassium-incorporated-in-a-carrier-free-dpi-pulmonary-system
#7
Anita Chvatal, Árpád Farkas, Imre Balásházy, Piroska Szabó-Révész, Rita Ambrus
Dry powder inhalers (DPIs) have been among the fastest developing inhaler forms in the past decades. Researches are focusing on the formulation of carrier-free powders to obtain a higher deep-lung deposition and hereby to increase the effectiveness of the medicine. The aim of our study was to prepare a carrier-free dry powder formulation of meloxicam potassium (MP), a novel salt form of meloxicam, using a one-step co-spray drying technology. Different types of excipients were used to modify the crystal structure and to increase aerosolization efficacy...
February 1, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28161666/cellular-internalization-and-transport-of-biodegradable-polyester-dendrimers-on-a-model-of-the-pulmonary-epithelium-and-their-formulation-in-pressurized-metered-dose-inhalers
#8
Rodrigo S Heyder, Qian Zhong, Reinaldo C Bazito, Sandro R P da Rocha
The purpose of this study was to evaluate the effect of generation and surface PEGylation of degradable polyester-based dendrimers nanocarriers on their interactions with an in vitro model of the pulmonary epithelium as well as to assess the ability to formulate such carriers in propellant-based, portable oral-inhalation devices to determine their potential for local and systemic delivery of drugs to and through the lungs. Hydroxyl (-OH) terminated polyester dendrimers of generation 3 and 4 (G3, and G4) were synthesized using a divergent approach...
February 1, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28160954/management-of-sepsis-in-patients-with-pulmonary-arterial-hypertension-in-the-intensive-care-unit
#9
REVIEW
Todd M Tartavoulle
Pulmonary arterial hypertension is a lethal condition, and the management of sepsis in patients with pulmonary arterial hypertension is challenging. As the disease progresses, the right ventricle is susceptible to failure due to a high pulmonary vascular resistance. The limited ability of the right ventricle to increase cardiac output in septic shock makes it difficult to deliver oxygen to the organ and tissues. Intravascular volume replacement and vasoactive drugs should only be considered after a thorough assessment...
March 2017: Critical Care Nursing Clinics of North America
https://www.readbyqxmd.com/read/28156176/respirable-controlled-release-polymeric-colloid-rcrpc-of-bosentan-for-the-management-of-pulmonary-hypertension-in-vitro-aerosolization-histological-examination-and-in-vivo-pulmonary-absorption
#10
Lydia A Hanna, Emad B Basalious, Omaima N ELGazayerly
Bosentan is an endothelin receptor antagonist (ERA) prescribed for patients with pulmonary arterial hypertension (PAH). The oral delivery of bosentan possesses several drawbacks such as low bioavailability (about 50%), short duration of action, frequent administration, hepatotoxicity and systemic hypotension. The pulmonary administration would circumvent the pre-systemic metabolism thus improving the bioavailability and avoids the systemic adverse effects of oral bosentan. However, the short duration of action and the frequent administration are the major drawbacks of inhalation therapy...
November 2016: Drug Delivery
https://www.readbyqxmd.com/read/28153761/apoe-modified-solid-lipid-nanoparticles-a-feasible-strategy-to-cross-the-blood-brain-barrier
#11
R Dal Magro, F Ornaghi, I Cambianica, S Beretta, F Re, C Musicanti, R Rigolio, E Donzelli, A Canta, E Ballarini, G Cavaletti, P Gasco, G Sancini
Solid lipid nanoparticles (SLN) are colloidal drug delivery systems characterized by higher entrapment efficiency, good scalability of the preparation process and increased sustained prolonged release of the payload compared to other nanocarriers. The possibility to functionalize the surface of SLN with ligands to achieve a site specific targeting makes them attractive to overcome the limited blood-brain barrier (BBB) penetration of therapeutic compounds. SLN are prepared for brain targeting by exploiting the adaptability of warm microemulsion process for the covalent surface modification with an Apolipoprotein E-derived peptide (SLN-mApoE)...
January 31, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28150215/pulmonary-delivery-of-magnetically-targeted-nano-in-microparticles
#12
Amber A McBride, Dominique N Price, Pavan Muttil
This chapter details the intratracheal delivery of dry powder microparticles termed nano-in-microparticles (NIMs) for the purpose of in vivo targeted pulmonary drug delivery. The dry powder NIMs technology improves on previous inhaled chemotherapy platforms designed as liquid formulations. Dry powder microparticles were created through the process of spray drying; a protocol detailing the formulation of NIMs dry powder is included as a separate chapter in this book. Dry powder NIMs containing fluorescent nanoparticles and magnetically-responsive superparamagnetic iron oxide nanoparticles are intratracheally delivered (insufflated) in the presence of a magnetic field and targeted to the left lung of mice...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28150197/preparation-and-characterization-of-magnetic-nano-in-microparticles-for-pulmonary-delivery
#13
Amber A McBride, Dominique N Price, Pavan Muttil
The purpose of this chapter is to detail the formulation and characterization of a magnetically-targeted drug delivery vehicle, termed nano-in-microparticles (NIMs), for pulmonary drug delivery. Currently, chemotherapeutics and antibiotics are delivered systemically and result in whole body side-effects. NIMs are formulated with superparamagnetic iron oxide nanoparticles, termed SPIONs, making these particles targetable to specific lung regions using a strong external magnet. Additionally, these particles can be formulated to contain any drug or therapeutic agent, such that a therapeutic dose can be delivered to a specific tissue location using the SPIONs-magnet interaction...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28116610/effect-of-paclitaxel-mesoporous-silica-nanoparticles-with-a-core-shell-structure-on-the-human-lung-cancer-cell-line-a549
#14
Tieliang Wang, Ying Liu, Chao Wu
A nanodrug delivery system of paclitaxel-mesoporous silica nanoparticles with a core-shell structure (PAC-csMSN) was used to increase the dissolution of paclitaxel (PAC) and improve its treatment of lung cancer. PAC was loaded into the core-shell mesoporous silica nanoparticles (csMSN) by the adsorption equilibrium method and was in an amorphous state in terms of its mesoporous structure. In vitro and in vivo studies showed that csMSN increased the dissolution rate of PAC and improved its lung absorption. The area under concentration-time curve (AUC) value of PAC-csMSN used for pulmonary delivery in rabbits was 2...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28115845/long-term-intravenous-administration-of-carboxylated-single-walled-carbon-nanotubes-induces-persistent-accumulation-in-the-lungs-and-pulmonary-fibrosis-via-the-nuclear-factor-kappa-b-pathway
#15
Yue Qin, Suning Li, Gan Zhao, Xuanhao Fu, Xueping Xie, Yiyi Huang, Xiaojing Cheng, Jinbin Wei, Huagang Liu, Zefeng Lai
Numerous studies have demonstrated promising application of single-walled carbon nanotubes (SWNTs) in drug delivery, diagnosis, and targeted therapy. However, the adverse health effects resulting from intravenous injection of SWNTs are not completely understood. Studies have shown that levels of "pristine" or carboxylated carbon nanotubes are very high in mouse lungs after intravenous injection. We hypothesized that long-term and repeated intravenous administration of carboxylated SWNTs (c-SWNTs) can result in persistent accumulation and induce histopathologic changes in rat lungs...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28109773/exploring-polyvinylpyrrolidone-in-the-engineering-of-large-porous-plga-microparticles-via-single-emulsion-method-with-tunable-sustained-release-in-the-lung-in-vitro-and-in-vivo-characterization
#16
Rui Ni, Uwe Muenster, Jing Zhao, Lan Zhang, Eva-Maria Becker-Pelster, Martin Rosenbruch, Shirui Mao
Sustained pulmonary drug delivery is regarded as an effective strategy for local treatment of chronic lung diseases. Despite of the progress made so far, there remains a need for respirable drug loaded porous microparticles, where porosity of the microparticles can be readily engineered during the preparation process, with tunable sustained drug release upon lung deposition. In this work, polyvinyl pyrrolidone (PVP) was used as a novel porogen to engineer PLGA-based large porous particles (LPPs) using single emulsion method, with fine tuning of the porosity, sustained drug release both in vitro and in vivo...
January 18, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28095918/anti-staphylococcal-activity-resulting-from-epithelial-lining-fluid-elf-concentrations-of-amikacin-inhale-administered-via-the-pulmonary-drug-delivery-system
#17
Islam M Ghazi, Mordechai Grupper, David P Nicolau
BACKGROUND: Amikacin inhale (BAY41-6551), a unique drug-device combination of a specially formulated drug solution and a pulmonary drug delivery system device (AMK-I) is currently under phase III study as an adjunctive therapy to IV antibiotics for the treatment of Gram-negative pneumonia in mechanically ventilated patients. While the epidemiology of nosocomial pneumonia is predominated by Gram-negative pathogens such as Pseudomonas aeruginosa and the Enterobacteriaceae, Staphylococcus aureus is increasingly recognized as a pathogen of concern for these pulmonary based infections...
January 17, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28093351/in-vitro-uptake-and-transport-studies-of-peg-plga-polymeric-micelles-in-respiratory-epithelial-cells
#18
Xiao Hu, Fei-Fei Yang, Chun-Yu Liu, Carsten Ehrhardt, Yong-Hong Liao
Polymeric micelles are considered promising carriers for pulmonary drug delivery. Their interaction with the respiratory epithelium, however, is mostly unknown. In the present study, methoxypoly (ethylene glycol) (mPEG)-poly (lactic-co-glycolic acid) (PLGA) micelles containing curcumin acetate (CA) or a mixture of CA and Nile Red (NR) were prepared using the solvent evaporation method. Calu-3 and NCI-H441 human respiratory epithelial cell monolayers were used as in vitro models of upper and lower respiratory tract epithelium barrier, respectively, to study the cellular uptake and transport of the vesicles...
January 13, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28088005/nicotine-hydrogen-tartrate-loaded-chitosan-nanoparticles-formulation-characterization-and-in-vitro-delivery-from-dry-powder-inhaler-formulation
#19
Hui Wang, Graeme George, Selena Bartlett, Changyou Gao, Nazrul Islam
This study reports the development of nanoparticles in the form of inhalable micro-aggregates of biodegradable chitosan (CS) loaded with nicotine hydrogen tartrate (NHT) for potential pulmonary delivery of nicotine from dry powder inhaler (DPI) formulations with prolonged release profile. The NHT-loaded CS particles were prepared using a water-in-oil emulsion crosslinking method. The prepared particles were characterized using scanning electron microscopy (SEM) and transmission electron microscopy (TEM) for morphological studies; Zetasizer and Mastersizer were applied for particle size analysis...
January 11, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28078950/magnetic-nanoparticles-based-drug-and-gene-delivery-systems-for-the-treatment-of-pulmonary-diseases
#20
Ibrahim M El-Sherbiny, Nancy M Elbaz, Mohammed Sedki, Abdulaziz Elgammal, Magdi H Yacoub
Magnetic nanoparticles (MNPs) have gained much attention due to their unique properties such as biocompatibility and biodegradability as well as magnetic and heat-medicated characteristics. Due to these inherent properties, MNPs have been widely used in various biomedical applications including targeted drug delivery and hyperthermia-based therapy. Hyperthermia is a promising approach for the thermal activation therapy of several diseases, including pulmonary diseases. Additionally, due to their large loading capacity and controlled release ability, several MNP-based drug delivery systems have been emerged for treatment of cystic fibrosis and lung cancer...
January 12, 2017: Nanomedicine
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